ADG708 Analog Devices, ADG708 Datasheet - Page 11

• Manufacturer Part Number: ADG708
• Description: CMOS/ 3 ohm Low Voltage 4-/8-Channel Multiplexers
• Manufacturer: Analog Devices

Power-Supply Sequencing
When using CMOS devices, care must be taken to ensure correct
power-supply sequencing. Incorrect power-supply sequencing
can result in the device being subjected to stresses beyond the
maximum ratings listed in the data sheet. Digital and analog
inputs should always be applied after power supplies and ground.
For single supply operation, V
to the device as possible.
REV. 0
Test Circuit 9. OFF Isolation and Bandwidth
** CONNECT TO 2.4V FOR BANDWIDTH MEASUREMENTS
INSERTION LOSS = 20LOG
* SIMILAR CONNECTION FOR ADG709
V
IN
OFF ISOLATION = 20LOG
A2
A1
A0
EN **
V
R
GND
50
S
S
ADG708
V
* SIMILAR CONNECTION FOR ADG709
IN
V
V
*SIMILAR CONNECTION FOR ADG709
DD
DD
V
V
SS
SS
*
A2
A1
A0
EN
V
V
10
S1
S8
SS
DD
DD
D
(
ADG708*
EN
S
A2
A1
A0
V
should be tied to GND as close
S2 THRU S8
GND
OUT
10
V
V
V
OUT
ADG708*
DD
DD
V
R
50
GND
WITHOUT SWITCH
V
V
OUT
V
L
S
SS
WITH SWITCH
SS
S1
V
V
V
D
Test Circuit 7. Enable Delay, t
SS
SS
OUT
D
V
R
300
S
L
V
1nF
S
C
Test Circuit 8. Charge Injection
L
)
V
OUT
C
35pF
L
V
OUT
LOGIC INPUT
–11–
(V
DRIVE (V
IN
)
V
ENABLE
OUTPUT
OUT
3V
0V
3V
IN
0V
0V
V
0
ON
)
Test Circuit 10. Channel-to-Channel Crosstalk
(EN), t
V
S
CHANNEL-TO-CHANNEL CROSSTALK = 20LOG
OFF
* SIMILAR CONNECTION FOR ADG709
(EN)
Q
50
INJ
50%
= C
L
0.9V
t
ON
S1
S8
A2
A1
A0
S2
0
V
(EN)
OUT
GND
ADG708
V
V
ADG708/ADG709
50%
SS
DD
V
V
SS
SS
*
EN
V
D
OUT
0.9V
t
OFF
R
50
L
0
2.4V
10
(EN)
V
V
OUT
V
OUT
S